Use #[expect(lint)], not #[allow(lint)]

kernel/comps/framebuffer/src/lib.rs

@@ -31,9 +31,9 @@ fn framebuffer_init() -> Result<(), ComponentInitError> {
 pub(crate) static WRITER: Once<SpinLock<Writer>> = Once::new();
 
 // ignore the warnings since we use the `todo!` macro.
-#[allow(unused_variables)]
+#[expect(unused_variables)]
-#[allow(unreachable_code)]
+#[expect(unreachable_code)]
-#[allow(clippy::diverging_sub_expression)]
+#[expect(clippy::diverging_sub_expression)]
 pub(crate) fn init() {
     let mut writer = {
         let Some(framebuffer) = boot_info().framebuffer_arg else {

kernel/comps/mlsdisk/src/lib.rs

@@ -5,7 +5,7 @@
 #![feature(let_chains)]
 #![feature(negative_impls)]
 #![feature(slice_as_chunks)]
-#![allow(dead_code, unused_imports)]
+#![expect(dead_code, unused_imports)]
 
 mod error;
 mod layers;

kernel/comps/mlsdisk/src/tx/mod.rs

@@ -21,7 +21,7 @@ use crate::{
 };
 
 /// A transaction provider.
-#[allow(clippy::type_complexity)]
+#[expect(clippy::type_complexity)]
 pub struct TxProvider {
     id: u64,
     initializer_map: RwLock<HashMap<TypeId, Box<dyn Any + Send + Sync>>>,

kernel/comps/mlsdisk/src/util/lazy_delete.rs

@@ -40,7 +40,7 @@ use crate::prelude::*;
 /// // The deletion operation will be carried out when it is dropped
 /// drop(lazy_delete_u32);
 /// ```
-#[allow(clippy::type_complexity)]
+#[expect(clippy::type_complexity)]
 pub struct LazyDelete<T> {
     obj: T,
     is_deleted: AtomicBool,

kernel/comps/network/src/dma_pool.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused)]
+#![expect(unused)]
 
 use alloc::{
     collections::VecDeque,

kernel/comps/softirq/src/taskless.rs

@@ -80,7 +80,7 @@ impl Taskless {
         // Since the same taskless will not be executed concurrently,
         // it is safe to use a `RefCell` here though the `Taskless` will
         // be put into an `Arc`.
-        #[allow(clippy::arc_with_non_send_sync)]
+        #[expect(clippy::arc_with_non_send_sync)]
         Arc::new(Self {
             is_scheduled: AtomicBool::new(false),
             is_running: AtomicBool::new(false),

kernel/comps/virtio/src/device/input/device.rs

@@ -75,7 +75,7 @@ pub struct InputDevice {
     event_queue: SpinLock<VirtQueue>,
     status_queue: VirtQueue,
     event_table: EventTable,
-    #[allow(clippy::type_complexity)]
+    #[expect(clippy::type_complexity)]
     callbacks: RwLock<Vec<Arc<dyn Fn(InputEvent) + Send + Sync + 'static>>, LocalIrqDisabled>,
     transport: SpinLock<Box<dyn VirtioTransport>>,
 }

kernel/comps/virtio/src/device/network/header.rs

@@ -34,7 +34,7 @@ bitflags! {
 
 #[repr(u8)]
 #[derive(Default, Debug, Clone, Copy, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum GsoType {
     #[default]
     VIRTIO_NET_HDR_GSO_NONE = 0,

kernel/comps/virtio/src/transport/pci/capability.rs

@@ -11,7 +11,7 @@ use ostd::bus::pci::{
 
 #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
 #[repr(u8)]
-#[allow(clippy::enum_variant_names)]
+#[expect(clippy::enum_variant_names)]
 pub enum VirtioPciCpabilityType {
     CommonCfg = 1,
     NotifyCfg = 2,

kernel/comps/virtio/src/transport/pci/device.rs

@@ -268,7 +268,7 @@ impl VirtioTransport for VirtioPciModernTransport {
 }
 
 impl VirtioPciModernTransport {
-    #[allow(clippy::result_large_err)]
+    #[expect(clippy::result_large_err)]
     pub(super) fn new(
         common_device: PciCommonDevice,
     ) -> Result<Self, (BusProbeError, PciCommonDevice)> {

kernel/comps/virtio/src/transport/pci/legacy.rs

@@ -73,7 +73,7 @@ pub struct VirtioPciLegacyTransport {
 impl VirtioPciLegacyTransport {
     pub const QUEUE_ALIGN_SIZE: usize = 4096;
 
-    #[allow(clippy::result_large_err)]
+    #[expect(clippy::result_large_err)]
     pub(super) fn new(
         common_device: PciCommonDevice,
     ) -> Result<Self, (BusProbeError, PciCommonDevice)> {

kernel/libs/aster-bigtcp/src/iface/mod.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
 mod common;
-#[allow(clippy::module_inception)]
+#[expect(clippy::module_inception)]
 mod iface;
 mod phy;
 mod poll;

kernel/libs/aster-rights-proc/src/require_attr.rs

@@ -70,14 +70,14 @@ pub fn expand_require(item: RequireItem, mut require_attr: RequireAttr) -> Token
         RequireItem::Impl(item_impl) => {
             let new_item_impl = require_attr.fold_item_impl(item_impl);
             quote!(
-                #[allow(clippy::multiple_bound_locations)]
+                #[expect(clippy::multiple_bound_locations)]
                 #new_item_impl
             )
         }
         RequireItem::Fn(item_fn) => {
             let new_item_fn = require_attr.fold_item_fn(item_fn);
             quote!(
-                #[allow(clippy::multiple_bound_locations)]
+                #[expect(clippy::multiple_bound_locations)]
                 #new_item_fn
             )
         }

kernel/libs/comp-sys/cargo-component/src/driver.rs

@@ -80,7 +80,7 @@ impl rustc_driver::Callbacks for DefaultCallbacks {}
 struct ComponentCallbacks;
 impl rustc_driver::Callbacks for ComponentCallbacks {
     // JUSTIFICATION: necessary to set `mir_opt_level`
-    #[allow(rustc::bad_opt_access)]
+    #[expect(rustc::bad_opt_access)]
     fn config(&mut self, config: &mut interface::Config) {
         let conf_path = analysis::lookup_conf_file();
         let conf_path_string = if let Ok(Some(path)) = &conf_path {
@@ -179,7 +179,7 @@ fn report_ice(info: &panic::PanicInfo<'_>) {
     interface::try_print_query_stack(&handler, num_frames);
 }
 
-#[allow(clippy::too_many_lines)]
+#[expect(clippy::too_many_lines)]
 pub fn main() {
     rustc_driver::init_rustc_env_logger();
     LazyLock::force(&ICE_HOOK);

kernel/libs/comp-sys/cargo-component/tests/test_utils/mod.rs

@@ -1,7 +1,7 @@
 // Licensed under the Apache License, Version 2.0 or the MIT License.
 // Copyright (C) 2023-2024 Ant Group.
 
-#![allow(unused)]
+#![expect(unused)]
 
 use std::path::PathBuf;
 use std::process::Command;

kernel/libs/keyable-arc/src/lib.rs

@@ -248,7 +248,7 @@ impl<T> KeyableWeak<T> {
     /// Constructs a new `KeyableWeak<T>`, without allocating any memory.
     /// Calling `upgrade` on the return value always gives `None`.
     #[inline]
-    #[allow(clippy::new_without_default)]
+    #[expect(clippy::new_without_default)]
     pub fn new() -> Self {
         Self(Weak::new())
     }

kernel/libs/typeflags-util/src/set.rs

@@ -17,7 +17,7 @@ pub trait Set {}
 pub struct Cons<T, S: Set>(PhantomData<(T, S)>);
 
 impl<T, S: Set> Cons<T, S> {
-    #[allow(clippy::new_without_default)]
+    #[expect(clippy::new_without_default)]
     pub fn new() -> Self {
         Cons(PhantomData)
     }

kernel/src/device/null.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::*;
 use crate::{

kernel/src/device/pty/mod.rs

@@ -10,7 +10,7 @@ use crate::{
     prelude::*,
 };
 
-#[allow(clippy::module_inception)]
+#[expect(clippy::module_inception)]
 mod pty;
 
 pub use pty::{PtyMaster, PtySlave};

kernel/src/device/random.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use crate::{
     events::IoEvents,

kernel/src/device/tty/device.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use crate::{
     events::IoEvents,

kernel/src/device/tty/driver.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use ostd::mm::{Infallible, VmReader};
 use spin::Once;

kernel/src/device/tty/line_discipline.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use alloc::format;
 

kernel/src/device/tty/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use ostd::early_print;
 use spin::Once;

kernel/src/device/tty/termio.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(non_camel_case_types)]
+#![expect(non_camel_case_types)]
 
 use crate::prelude::*;
 

kernel/src/device/urandom.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use crate::{
     events::IoEvents,

kernel/src/device/zero.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::*;
 use crate::{

kernel/src/error.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 /// Error number.
 #[repr(i32)]

kernel/src/events/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#[allow(clippy::module_inception)]
+#[expect(clippy::module_inception)]
 mod events;
 mod io_events;
 mod observer;

kernel/src/events/observer.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::Events;
 

kernel/src/fs/devpts/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::time::Duration;
 

kernel/src/fs/devpts/ptmx.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::*;
 use crate::{

kernel/src/fs/devpts/slave.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::*;
 use crate::{

kernel/src/fs/exfat/bitmap.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::ops::Range;
 

kernel/src/fs/exfat/constants.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 pub(super) const ROOT_INODE_HASH: usize = 0;
 
 // Other pub(super) constants

kernel/src/fs/exfat/dentry.rs

@@ -55,24 +55,24 @@ impl ExfatDentry {
 
 const EXFAT_UNUSED: u8 = 0x00;
 
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_INVAL: u8 = 0x80;
 const EXFAT_BITMAP: u8 = 0x81;
 const EXFAT_UPCASE: u8 = 0x82;
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_VOLUME: u8 = 0x83;
 const EXFAT_FILE: u8 = 0x85;
 
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_GUID: u8 = 0xA0;
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_PADDING: u8 = 0xA1;
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_ACLTAB: u8 = 0xA2;
 
 const EXFAT_STREAM: u8 = 0xC0;
 const EXFAT_NAME: u8 = 0xC1;
-#[allow(dead_code)]
+#[expect(dead_code)]
 const EXFAT_ACL: u8 = 0xC2;
 
 const EXFAT_VENDOR_EXT: u8 = 0xE0;
@@ -204,7 +204,7 @@ impl ExfatDentrySet {
     /// Stream dentry index.
     const ES_IDX_STREAM: usize = 1;
     /// Name dentry index.
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     const ES_IDX_FIRST_FILENAME: usize = 2;
 
     pub(super) fn new(dentries: Vec<ExfatDentry>, should_checksum_match: bool) -> Result<Self> {

kernel/src/fs/exfat/fs.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::{num::NonZeroUsize, ops::Range, sync::atomic::AtomicU64};
 

kernel/src/fs/exfat/inode.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use alloc::string::String;
 use core::{cmp::Ordering, time::Duration};
@@ -491,7 +491,7 @@ impl ExfatInodeInner {
         };
 
         // FIXME: This isn't expected by the compiler.
-        #[allow(non_local_definitions)]
+        #[expect(non_local_definitions)]
         impl DirentVisitor for Vec<(String, usize)> {
             fn visit(
                 &mut self,
@@ -1011,7 +1011,7 @@ impl ExfatInode {
         let sub_dir = inner.num_sub_inodes;
         let mut child_offsets: Vec<usize> = vec![];
         // FIXME: This isn't expected by the compiler.
-        #[allow(non_local_definitions)]
+        #[expect(non_local_definitions)]
         impl DirentVisitor for Vec<usize> {
             fn visit(
                 &mut self,

kernel/src/fs/exfat/upcase_table.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use align_ext::AlignExt;
 use aster_rights::Full;

kernel/src/fs/ext2/fs.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::{
     block_group::{BlockGroup, RawGroupDescriptor},

kernel/src/fs/ext2/impl_for_vfs/inode.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::time::Duration;
 

kernel/src/fs/ext2/inode.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use alloc::{borrow::ToOwned, rc::Rc};
 use core::sync::atomic::{AtomicUsize, Ordering};

kernel/src/fs/file_handle.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 //! Opened File Handle
 

kernel/src/fs/file_table.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::sync::atomic::{AtomicU8, Ordering};
 

kernel/src/fs/fs_resolver.rs

@@ -195,7 +195,7 @@ impl FsResolver {
     /// If `follow_tail_link` is true and the trailing component is a symlink,
     /// it will be followed.
     /// Symlinks in earlier components of the path will always be followed.
-    #[allow(clippy::redundant_closure)]
+    #[expect(clippy::redundant_closure)]
     fn lookup_from_parent(
         &self,
         parent: &Dentry,

kernel/src/fs/inode_handle/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 //! Opened Inode-backed File Handle
 

kernel/src/fs/path/dentry.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::{
     sync::atomic::{AtomicU32, Ordering},

kernel/src/fs/procfs/template/builder.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::{
     dir::{DirOps, ProcDir},
@@ -166,7 +166,7 @@ impl OptionalBuilder {
         self
     }
 
-    #[allow(clippy::type_complexity)]
+    #[expect(clippy::type_complexity)]
     pub fn build(
         self,
     ) -> Result<(

kernel/src/fs/procfs/template/dir.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::time::Duration;
 

kernel/src/fs/utils/access_mode.rs

@@ -4,7 +4,7 @@ use aster_rights::Rights;
 
 use crate::prelude::*;
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Clone, Copy, Debug)]
 #[repr(u8)]
 pub enum AccessMode {

kernel/src/fs/utils/dirent_visitor.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use super::InodeType;
 use crate::prelude::*;

kernel/src/fs/utils/inode.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use core::{any::TypeId, time::Duration};
 

kernel/src/fs/utils/page_cache.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use core::{
     iter,

kernel/src/fs/utils/random_test.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use alloc::sync::Arc;
 

kernel/src/ipc/mod.rs

@@ -7,7 +7,7 @@ use crate::{
 
 pub mod semaphore;
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub type key_t = i32;
 
 bitflags! {
@@ -25,7 +25,7 @@ bitflags! {
 
 #[repr(i32)]
 #[derive(Debug, Clone, Copy, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum IpcControlCmd {
     IPC_RMID = 0,
     IPC_SET = 1,

kernel/src/kcmdline.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 //! The module to parse kernel command-line arguments.
 //!

kernel/src/lib.rs

@@ -6,7 +6,7 @@
 #![no_std]
 #![no_main]
 #![deny(unsafe_code)]
-#![allow(incomplete_features)]
+#![expect(incomplete_features)]
 #![feature(btree_cursors)]
 #![feature(btree_extract_if)]
 #![feature(debug_closure_helpers)]

kernel/src/net/socket/util/shutdown_cmd.rs

@@ -6,7 +6,7 @@ use crate::prelude::*;
 /// From <https://elixir.bootlin.com/linux/v6.0.9/source/include/linux/net.h>
 #[repr(i32)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum SockShutdownCmd {
     /// Shutdown receptions
     SHUT_RD = 0,

kernel/src/prelude.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused)]
+#![expect(unused)]
 
 pub(crate) use alloc::{
     boxed::Box,

kernel/src/process/mod.rs

@@ -5,7 +5,7 @@ pub mod credentials;
 mod exit;
 mod kill;
 pub mod posix_thread;
-#[allow(clippy::module_inception)]
+#[expect(clippy::module_inception)]
 mod process;
 mod process_filter;
 pub mod process_table;

kernel/src/process/posix_thread/builder.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use ostd::{cpu::CpuSet, sync::RwArc, task::Task, user::UserSpace};
 

kernel/src/process/posix_thread/futex.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use intrusive_collections::{intrusive_adapter, LinkedList, LinkedListAtomicLink};
 use ostd::{
@@ -382,7 +382,7 @@ impl FutexKey {
 // The implementation is from occlum
 
 #[derive(PartialEq, Debug, Clone, Copy)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum FutexOp {
     FUTEX_WAIT = 0,
     FUTEX_WAKE = 1,

kernel/src/process/process/builder.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::{Pid, Process};
 use crate::{

kernel/src/process/process/job_control.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use ostd::sync::WaitQueue;
 

kernel/src/process/process_filter.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::{Pgid, Pid};
 use crate::prelude::*;

kernel/src/process/process_table.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 //! A global table stores the pid to process mapping.
 //! This table can be used to get process with pid.

kernel/src/process/process_vm/init_stack/aux_vec.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use crate::prelude::*;
 
@@ -14,7 +14,7 @@ use crate::prelude::*;
 ///  > about the environment in which it is operating. The form of this information
 ///  > is a table of key-value pairs, where the keys are from the set of ‘AT_’
 ///  > values in elf.h.
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
 #[repr(u8)]
 pub enum AuxKey {

kernel/src/process/process_vm/init_stack/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 //! The init stack for the process.
 //! The init stack is used to store the `argv` and `envp` and auxiliary vectors.

kernel/src/process/program_loader/elf/elf_file.rs

@@ -165,23 +165,23 @@ impl ElfHeader {
 pub struct HeaderPt2_64 {
     pub type_: Type_,
     pub machine: Machine_,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub version: u32,
     pub entry_point: u64,
     pub ph_offset: u64,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub sh_offset: u64,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub flags: u32,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub header_size: u16,
     pub ph_entry_size: u16,
     pub ph_count: u16,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub sh_entry_size: u16,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub sh_count: u16,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     pub sh_str_index: u16,
 }
 

kernel/src/process/program_loader/elf/load_elf.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 //! This module is used to parse elf file content to get elf_load_info.
 //! When create a process from elf file, we will use the elf_load_info to construct the VmSpace

kernel/src/process/rlimit.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 // FIXME: The resource limits should be respected by the corresponding subsystems of the kernel.
 
-#![allow(non_camel_case_types)]
+#![expect(non_camel_case_types)]
 
 use super::process_vm::{INIT_STACK_SIZE, USER_HEAP_SIZE_LIMIT};
 use crate::prelude::*;

kernel/src/process/signal/c_types.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(non_camel_case_types)]
+#![expect(non_camel_case_types)]
 
 use core::mem::{self, size_of};
 

kernel/src/process/signal/constants.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 /// Standard signals
 pub(super) const MIN_STD_SIG_NUM: u8 = 1;

kernel/src/process/signal/mod.rs

@@ -135,7 +135,7 @@ pub fn handle_pending_signal(
     }
 }
 
-#[allow(clippy::too_many_arguments)]
+#[expect(clippy::too_many_arguments)]
 pub fn handle_user_signal(
     ctx: &Context,
     sig_num: SigNum,

kernel/src/process/signal/sig_mask.rs

@@ -84,7 +84,7 @@ impl<T: Into<SigSet>> ops::BitOrAssign<T> for SigSet {
     }
 }
 
-#[allow(clippy::suspicious_arithmetic_impl)]
+#[expect(clippy::suspicious_arithmetic_impl)]
 impl<T: Into<SigSet>> ops::Add<T> for SigSet {
     type Output = Self;
 
@@ -95,7 +95,7 @@ impl<T: Into<SigSet>> ops::Add<T> for SigSet {
     }
 }
 
-#[allow(clippy::suspicious_op_assign_impl)]
+#[expect(clippy::suspicious_op_assign_impl)]
 impl<T: Into<SigSet>> ops::AddAssign<T> for SigSet {
     fn add_assign(&mut self, rhs: T) {
         self.bits |= rhs.into().bits;

kernel/src/process/signal/sig_num.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use core::sync::atomic::{AtomicU8, Ordering};
 

kernel/src/process/signal/sig_stack.rs

@@ -25,7 +25,7 @@ bitflags! {
 }
 
 #[repr(u8)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
 pub enum SigStackStatus {
     #[default]

kernel/src/process/signal/signals/user.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::Signal;
 use crate::process::{

kernel/src/process/sync/condvar.rs

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use alloc::sync::Arc;
 use core::time::Duration;

kernel/src/process/sync/mod.rs

@@ -2,5 +2,5 @@
 
 mod condvar;
 
-#[allow(unused_imports)]
+#[expect(unused_imports)]
 pub use self::condvar::{Condvar, LockErr};

kernel/src/process/wait.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use super::{process_filter::ProcessFilter, signal::constants::SIGCHLD, ExitCode, Pid, Process};
 use crate::{

kernel/src/sched/sched_class/fair.rs

@@ -165,7 +165,7 @@ impl Ord for FairQueueItem {
 /// ensure the efficiency for finding next-to-run threads.
 #[derive(Debug)]
 pub(super) struct FairClassRq {
-    #[allow(unused)]
+    #[expect(unused)]
     cpu: CpuId,
     /// The ready-to-run threads.
     entities: BinaryHeap<Reverse<FairQueueItem>>,

kernel/src/sched/sched_class/mod.rs

@@ -38,7 +38,7 @@ use crate::thread::{AsThread, Thread};
 
 type SchedEntity = (Arc<Task>, Arc<Thread>);
 
-#[allow(unused)]
+#[expect(unused)]
 pub fn init() {
     inject_scheduler(Box::leak(Box::new(ClassScheduler::new())));
 }

kernel/src/sched/sched_class/real_time.rs

@@ -135,7 +135,7 @@ impl PrioArray {
 /// is empty, the 2 arrays are swapped by `index`.
 #[derive(Debug)]
 pub(super) struct RealTimeClassRq {
-    #[allow(unused)]
+    #[expect(unused)]
     cpu: CpuId,
     index: bool,
     array: [PrioArray; 2],

kernel/src/syscall/arch_prctl.rs

@@ -5,7 +5,7 @@ use ostd::cpu::UserContext;
 use super::SyscallReturn;
 use crate::prelude::*;
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[repr(u64)]
 #[derive(Debug, TryFromInt)]
 pub enum ArchPrctlCode {

kernel/src/syscall/clock_gettime.rs

@@ -39,7 +39,7 @@ pub fn sys_clock_gettime(
 // The hard-coded clock IDs.
 #[derive(Debug, Copy, Clone, TryFromInt, PartialEq)]
 #[repr(i32)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum ClockId {
     CLOCK_REALTIME = 0,
     CLOCK_MONOTONIC = 1,
@@ -68,7 +68,7 @@ pub enum ClockId {
 pub enum DynamicClockIdInfo {
     Pid(u32, DynamicClockType),
     Tid(u32, DynamicClockType),
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     Fd(u32),
 }
 

kernel/src/syscall/fcntl.rs

@@ -161,7 +161,7 @@ fn handle_setown(fd: FileDesc, arg: u64, ctx: &Context) -> Result<SyscallReturn>
 
 #[repr(i32)]
 #[derive(Debug, Clone, Copy, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 enum FcntlCmd {
     F_DUPFD = 0,
     F_GETFD = 1,
@@ -176,10 +176,10 @@ enum FcntlCmd {
     F_DUPFD_CLOEXEC = 1030,
 }
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub type off_t = i64;
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Debug, Copy, Clone, TryFromInt)]
 #[repr(u16)]
 pub enum RangeLockWhence {

kernel/src/syscall/getdents64.rs

@@ -229,11 +229,11 @@ impl DirentSerializer for Dirent64 {
     }
 }
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[repr(u8)]
 #[derive(Debug, Clone, Copy)]
 enum DirentType {
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     DT_UNKNOWN = 0,
     DT_FIFO = 1,
     DT_CHR = 2,
@@ -242,7 +242,7 @@ enum DirentType {
     DT_REG = 8,
     DT_LNK = 10,
     DT_SOCK = 12,
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     DT_WHT = 14,
 }
 

kernel/src/syscall/madvise.rs

@@ -60,7 +60,7 @@ fn madv_free(start: Vaddr, end: Vaddr, ctx: &Context) -> Result<()> {
 
 #[repr(i32)]
 #[derive(Debug, Clone, Copy, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 /// This definition is the same from linux
 pub enum MadviseBehavior {
     MADV_NORMAL = 0,     /* no further special treatment */

kernel/src/syscall/prctl.rs

@@ -96,7 +96,7 @@ const PR_GET_NAME: i32 = 16;
 const PR_SET_TIMERSLACK: i32 = 29;
 const PR_GET_TIMERSLACK: i32 = 30;
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Debug, Clone, Copy)]
 pub enum PrctlCmd {
     PR_SET_PDEATHSIG(SigNum),
@@ -105,9 +105,9 @@ pub enum PrctlCmd {
     PR_GET_NAME(Vaddr),
     PR_GET_KEEPCAPS,
     PR_SET_KEEPCAPS(u32),
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     PR_SET_TIMERSLACK(u64),
-    #[allow(dead_code)]
+    #[expect(dead_code)]
     PR_GET_TIMERSLACK,
     PR_SET_DUMPABLE(Dumpable),
     PR_GET_DUMPABLE,

kernel/src/syscall/select.rs

@@ -219,7 +219,7 @@ impl FdSet {
     }
 
     /// Equivalent to FD_CLR.
-    #[allow(unused)]
+    #[expect(unused)]
     pub fn unset(&mut self, fd: FileDesc) -> Result<()> {
         let fd = fd as usize;
         if fd >= FD_SETSIZE {

kernel/src/syscall/set_get_priority.rs

@@ -126,7 +126,7 @@ impl PriorityTarget {
     }
 }
 
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 #[derive(Clone, Debug, TryFromInt)]
 #[repr(i32)]
 enum Which {

kernel/src/syscall/setitimer.rs

@@ -11,7 +11,7 @@ use crate::{
 /// `ItimerType` is used to differ the target timer for some timer-related syscalls.
 #[derive(Debug, Copy, Clone, TryFromInt, PartialEq)]
 #[repr(i32)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub(super) enum ItimerType {
     ITIMER_REAL = 0,
     ITIMER_VIRTUAL = 1,

kernel/src/syscall/sigaltstack.rs

@@ -126,6 +126,6 @@ impl From<SigStack> for stack_t {
     }
 }
 
-#[allow(unused)]
+#[expect(unused)]
 const SIGSTKSZ: usize = 8192;
 const MINSTKSZ: usize = 2048;

kernel/src/thread/exception.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused_variables)]
+#![expect(unused_variables)]
 
 use aster_rights::Full;
 use ostd::{cpu::*, mm::VmSpace};

kernel/src/thread/work_queue/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 //! Work queue mechanism.
 //!

kernel/src/thread/work_queue/work_item.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use core::sync::atomic::{AtomicBool, Ordering};
 

kernel/src/thread/work_queue/worker.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use ostd::{
     cpu::{CpuId, CpuSet},

kernel/src/thread/work_queue/worker_pool.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(dead_code)]
+#![expect(dead_code)]
 
 use core::{
     sync::atomic::{AtomicBool, Ordering},

kernel/src/time/mod.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(non_camel_case_types)]
+#![expect(non_camel_case_types)]
 
 pub use core::{timer, Clock};